MediaTek is reportedly working on an overclocked version of the Dimensity 9000. It clocks the Cortex-X2 core at 3.2 GHz while keeping everything else identical, including the Mali G710-MC10 GPU and codename.
https://www.notebookcheck.net/MediaTek-Dimensity-9000-Overclocked-version-of-the-SoC-aims-to-push-its-Cortex-X2-core-to-3-2-GHz.612397.0.html
Mediatek has a long track record of unreliable, slow and inefficient processors. Since Mediatek optimizes their processors for unsustainable performance during benchmarks, you cant truly judge how poorly they perform until real world testing.
Aside from Apple, Qualcomm reigns supreme in mobile processors.